Controllable synthesis of SiC@Graphene core‐shell nanoparticles via fluidized bed chemical vapor deposition

Abstract

AbstractSiC@Graphene (SiC@G) core‐shell nanoparticles were successfully prepared by a facile fluidized bed (FB) chemical vapor deposition (CVD) method. SiC@G core‐shell nanoparticles with an average size of 10 nm and graphene from 1 to 5 layers with a controllable thickness were obtained by finely adjusting the experimental temperatures. The formation of SiC nanoparticles and graphene layers was confirmed by the results of X‐ray diffraction (XRD) and Raman Spectroscopy. The graphene content in SiC@G core‐shell nanoparticles prepared at different temperatures was measured from thermogravimetric analysis (TG), which varied from 5.89% to 11.88 mass%. From X‐ray photoelectron spectroscopy (XPS) results, no absorption assigned to Si‐O band was detected, indicating the effective protection of the SiC nanoparticles against oxidation by the graphene shell to resist oxidation of SiC nanoparticles. This novel method of preparation of SiC@G core‐shell nanoparticles could be applied to large‐scale production and find diverse applications in related fields.